GLOSSARY

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NickTool nameLog Name(s)Measured physical propertyApplications

NMR

Nuclear Magnetic Logging

TAU1, TAU2Nuclear magnetic moment relaxation timeTotal and effective formation porosity and saturation

SONIC

Sonic LoggingVS, VP, DS, DTVeolocity of acoustic wavesFormation lithology, porosity and saturation

LDT

Litho-Density LoggingRHOB, PEFGamma ray decrementFormation lithology, porosity

CNL

Compensated Neutron LoggingNPHIThermal neutron scatter decrementFormation lithology, porosity
GR Gamma Ray LoggingGRNatural gamma ray emmissionFormation shaliness and formation boundaries

RES

Resistivity LoggingIDL, MDL, MSFL, LDL, MDLFormation electrical resistivityFormation porosity and saturation

SP

Sponteneous PotentialSPFormation electrical potentialFormation shaliness and formation boundaries

CAL

Caliper LoggingDCALWellbore diameterFormation lithology and formation boundaries
WFTWireline Formation TestingPFormation pressureFormation pressure profiling


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Fig.1. Example of basic set of Open Hole Reservoir Data Logs

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